UsageThey are used for pipe of transporting water with such medium as water sewage and seawater.It can avoid media flowing backwards and prevent damaging water hammer, guarantee the safetyUsing of pipes.

Features1. The products are new structure, small and light weight.2. Reliable sealed, endurable open-close, erar-resisting, long life.3. With less flowing resistance than old check valve and obvious energy-saving effects.

Performance data

Nominal pressure

1.0

Testing pressure(Mpa)

strength

1.5

Sealing

1.1

Suitable medium

Water, Oil etc.

Working temperature

≤150

Material of main parts

Part name

Material quality

Body

Grey cast iron

Stem

Stainless steel

Disc

Ductile cast iron, stainless steel

Note:sealing material:BUNA.EPDM

Outline and connect measurement

Nominal diameter DN

O.Dia.of Pipe

Flange

Valve

Weight

do

D

D1

D2

b1*

b2

f

n-d

L

R

t

kg

50

57

160

125

100

18

20

3

4-18

43

29.7

19

1.5

65

73

180

145

120

20

20

3

4-18

46

39.5

20

2.4

80

89

195

160

135

20

22

3

8-18

64

43.4

26

3.6

100

108

215

180

155

22

22

3

8-18

64

56.6

28

5.7

125

133

245

210

185

24

24

3

8-18

70

67.6

30

7.3

150

159

280

240

210

24

24

3

8-22

76

80.6

31

9.0

200

219

335

295

265

24

26

3

8-22

89

103.9

33

17.0

250

273

390

350

320

26

28

3

12-22

114

127

45

26.0

300

325

440

400

368

28

28

4

12-22

114

147

45

42.0

350

377

500

460

428

28

30

4

16-22

127

173

50

55.0

400

426

565

515

482

30

32

4

16-26

140

198

54

75.0

500

529

570

620

585

32

34

4

20-26

152

241

58

107

600

630

780

725

685

36

36

5

20-30

178

298

73

165

Note:1. This list is PN10(bar) 2. Flat welding steel flange b1 size is designed option 3. The flange dimension in this table accord with GB91199.7-88